Buffer overflow in Linux kernel

1) Buffer overflow

EUVDB-ID: #VU42753

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2013-2237

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The key_notify_policy_flush function in net/key/af_key.c in the Linux kernel before 3.9 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory by reading a broadcast message from the notify_policy interface of an IPSec key_socket.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.0 - 3.8.12

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:3.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.9:*:*:*:*:*:*:*

External links

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=85dfb745ee40232876663ae206cba35f24ab2a40
https://lists.opensuse.org/opensuse-security-announce/2013-09/msg00003.html
https://lists.opensuse.org/opensuse-security-announce/2013-09/msg00004.html
https://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html
https://rhn.redhat.com/errata/RHSA-2013-1166.html
https://rhn.redhat.com/errata/RHSA-2013-1173.html
https://www.debian.org/security/2013/dsa-2766
https://www.openwall.com/lists/oss-security/2013/07/04/3
https://www.ubuntu.com/usn/USN-1912-1
https://www.ubuntu.com/usn/USN-1913-1
https://www.ubuntu.com/usn/USN-1970-1
https://www.ubuntu.com/usn/USN-1972-1
https://www.ubuntu.com/usn/USN-1973-1
https://www.ubuntu.com/usn/USN-1992-1
https://www.ubuntu.com/usn/USN-1993-1
https://www.ubuntu.com/usn/USN-1995-1
https://www.ubuntu.com/usn/USN-1998-1
https://bugzilla.redhat.com/show_bug.cgi?id=981220
https://github.com/torvalds/linux/commit/85dfb745ee40232876663ae206cba35f24ab2a40
https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.9.bz2

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.